One of first things you need to know if you want to jailbreak apple tv is that you need to have the right model. If you do, then jailbreaking it is very simple. For instance, if you have the first generation Apple TV, you can jailbreak it by using Rowmote.

By jailbreaking your Apple TV you won’t lose any existing functionalities but ensure you will get more additional options and thanks to some third party tools this process is quite simple and in this tutorial we will show you how to jailbreak your 2nd Generation Apple TV.

The tool can be used to jailbreak Apple TV (2nd generation or ATV2 ) running the latest software 6.2.1 which is iOS 7.1.2. Bad luck for those who were anticipating an untethered update, as FireCore's current release is a tethered version.